Yes that's right.  The basic idea that 3D Studio had (and this has been
extended into MAX) is the following.

Each light has a name and so do all objects.  In the case of POV-Ray these
could just be optional keywords as was suggested (for the lights an ID
perhaps and the lit_by statement in the objects).

Then lights can either be excluded or included for each object (or vice
versa with the objects to the lights).  You also have the option for
lighting and/or casting shadows/receiving shadows.

There is also another option that could be implemented into the lights and
that is an option keyword set like the following:

affect_diffuse_only
affect_specular_only

So the light can be switched to affecting the diffuse or speculars of a
surface individually (very useful for ambient direction lighting).

Of course we'll wait and see what the new Superpatch has to offer first I
guess :)

--
Lance.


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Chris Maryan wrote in message <375D7650.2B68DE11@geocities.com>...
>I seem to remember that 3D Studio (the predecessor to MAX) implemented
>this by way of an exclusion list on the light source. This would be
>useful, however, it would also be nice to see your idea of a lit_by list
>to allow more flexibility.
>
>Just my $0.02
>
>--
>Chris Maryan
>mailto:cma### [at] geocitiescom
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